Mineral/inorganic filters

A mineral sunscreen filter is an inorganic particle capable of protecting the skin from ultraviolet radiation. It acts primarily by reflecting and scattering part of the UV rays. It can also absorb a fraction of them.

The two main mineral filters are zinc oxide and titanium dioxide. Their effectiveness and tolerability are well documented.

Inorganic filters are often recommended for sensitive skin or reactive skin, because their mode of action limits the risk of irritation.

Yes, they can leave a whitish film on the skin. This is related to their ability to scatter light. Modern formulations aim to minimize this effect.

Yes, in particular zinc oxide, which covers a broad spectrum of UV radiation. Titanium dioxide mainly protects against UVB and part of UVA.

Sunscreens for children often use mineral filters because of their good skin tolerance. Nevertheless, it is important to remember that even though children should be protected with sunscreen, the main priority remains not to expose them to the sun.

Yes, mineral filters act as soon as they are applied by forming a protective barrier on the surface of the skin.

It depends on the formulation of the sunscreen product. Some mineral sunscreens are specifically designed to be water-resistant. However, reapplication is still necessary after swimming.

Some sun care products contain only mineral filters. Others combine mineral and organic filters.